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Finding the Fourth Proportional to 72,003.60, 107,875.80 and 58,784.40

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Solution

The fourth proportional to 72,003.60, 107,875.80 and 58,784.40 is: 88,070.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,003.60 : 107,875.80 = 58,784.40 : x
  2. Step 2: Convert to fraction form
    72,003.60/107,875.80 = 58,784.40/x
  3. Step 3: Cross multiply
    72,003.60x = 107,875.80 × 58,784.40
  4. Step 4: Simplify right side
    72,003.60x = 6,341,414,177.52
  5. Step 5: Solve for x
    x = 6,341,414,177.52/72,003.60
  6. Step 6: Final answer
    x = 88,070.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.